My forge server won't run and could use some advice, I have copied the log below and highlighted want I believe the offending article is. Any ideas?

 

main/INFO

16:01:09

ModLauncher running: args [--gameDir, ., --launchTarget, fmlserver, --fml.forgeVersion, 36.1.31, --fml.mcpVersion, 20210115.111550, --fml.mcVersion, 1.16.5, --fml.forgeGroup, net.minecraftforge, nogui]

ModLauncher 8.0.9+86+master.3cf110c starting: java version 16.0.1 by AdoptOpenJDK

Console

16:01:09

Exception in thread "main" java.lang.IllegalAccessError: class cpw.mods.modlauncher.SecureJarHandler (in unnamed module @0x2a79781f) cannot access class sun.security.util.ManifestEntryVerifier (in module java.base) because module java.base does not export sun.security.util to unnamed module @0x2a79781f

at cpw.mods.modlauncher.SecureJarHandler.lambda$static$1(SecureJarHandler.java:41)

at cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck(LamdbaExceptionUtils.java:95)

at cpw.mods.modlauncher.SecureJarHandler.<clinit>(SecureJarHandler.java:41)

at cpw.mods.modlauncher.Launcher.lambda$new$6(Launcher.java:55)

at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708)

at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:52)

at cpw.mods.modlauncher.api.TypesafeMap.computeIfAbsent(TypesafeMap.java:47)

at cpw.mods.modlauncher.Environment.computePropertyIfAbsent(Environment.java:62)

at cpw.mods.modlauncher.Launcher.<init>(Launcher.java:55)

at cpw.mods.modlauncher.Launcher.main(Launcher.java:66)

at net.minecraftforge.server.ServerMain$Runner.runLauncher(ServerMain.java:63)

at net.minecraftforge.server.ServerMain$Runner.access$100(ServerMain.java:60)

at net.minecraftforge.server.ServerMain.main(ServerMain.java:57)

 

1 minute ago, diesieben07 said:

Java 16 is not yet supported.

Any ideas how I fix that?

1 minute ago, diesieben07 said:

Use Java 8-15, not 16.

Hmm might be a bit complicated, this is a hosted sever on hostinger. Thanks for your help anyway

1 minute ago, diesieben07 said:

They mention modpacks, so surely they must be able to run Forge. And no Forge version exists currently that runs on Java 16. So, talk to them or check the settings.

Yes opened a ticket with them, thanks!